673462421 has 2 divisors, whose sum is σ = 673462422. Its totient is φ = 673462420.

The previous prime is 673462417. The next prime is 673462423. The reversal of 673462421 is 124264376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342768196 + 330694225 = 18514^2 + 18185^2 .

It is a cyclic number.

It is not a de Polignac number, because 673462421 - 2² = 673462417 is a prime.

It is a super-3 number, since 3×673462421³ (a number of 27 digits) contains 333 as substring.

Together with 673462423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673462423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336731210 + 336731211.

It is an arithmetic number, because the mean of its divisors is an integer number (336731211).

Almost surely, 2^673462421 is an apocalyptic number.

It is an amenable number.

673462421 is a deficient number, since it is larger than the sum of its proper divisors (1).

673462421 is an equidigital number, since it uses as much as digits as its factorization.

673462421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 35.

The square root of 673462421 is about 25951.1545215237. The cubic root of 673462421 is about 876.5387545999.

The spelling of 673462421 in words is "six hundred seventy-three million, four hundred sixty-two thousand, four hundred twenty-one".